G91.0
BillableCommunicating hydrocephalus
Communicating hydrocephalus
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Secondary normal pressure hydrocephalus
Includes
Conditions included under this code
- acquired hydrocephalus
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(89)
SNOMED CT
- Hydrocephalus ex vacuo14055002
- Acquired communicating hydrocephalus192805000
- Non-obstructive hydrocephalus192805000
- IRPH -Intermittently raised pressure hydrocephalus230748005
- Intermittently raised pressure hydrocephalus230748005
- Hydrocephalus following traumatic injury230751003
- Post-traumatic hydrocephalus230751003
- Posttraumatic hydrocephalus230751003
- Hydrocephalus due to cerebrospinal fluid absorption defect230752005
- Hydrocephalus due to cerebrospinal fluid overproduction230753000
- Congenital anomaly of the meninges253199003
- Congenital malformation of the meninges253199003
- Communicating hydrocephalus271569006
- Progressive post haemorrhagic ventricular dilatation359629000
- Progressive post hemorrhagic ventricular dilatation359629000
- Progressive posthaemorrhagic ventricular dilatation359629000
- Progressive posthemorrhagic ventricular dilatation359629000
- Infantile posthaemorrhagic hydrocephalus359634001
- Infantile posthemorrhagic hydrocephalus359634001
- Post-haemorrhagic hydrocephalus371116000
- Post-hemorrhagic hydrocephalus371116000
- Posthaemorrhagic hydrocephalus371116000
- Posthemorrhagic hydrocephalus371116000
- Communicating hydrocephalus following traumatic injury410014007
- Non-obstructive hydrocephalus following traumatic injury410014007
- Post-traumatic communicating hydrocephalus410014007
- Posttraumatic communicating hydrocephalus410014007
- Postoperative communicating hydrocephalus698736001
- Communicating hydrocephalus co-occurrent and due to congenital agenesis of arachnoid villi722992006
- Acquired hydrocephalus of newborn782432008
- Ex-vacuo hydrocephalus due to infection860802009
- Ex-vacuo hydrocephalus due to and following radiation therapy1260338007
- Hydrocephalus ex vacuo due to and following radiation therapy1260338007
- Hydrocephalus ex vacuo due to injury of brain1260340002
- Hydrocephalus ex vacuo due to ageing1260344006
- Hydrocephalus ex vacuo due to aging1260344006
- Disorder of brain due to and following radiation therapy1339013005
- Disorder of brain due to and following radiotherapy1339013005
UMLS
- Communicating HydrocephalusC0009451
- Communicating hydrocephalusC0009451
- Communicating hydrocephalus (disorder)C0009451
- Hydrocephalus, CommunicatingC0009451
- Hydrocephalus, communicatingC0009451
- Hydrocephaly communicativeC0009451
- Non-Obstructive HydrocephalusC0009451
- Non-obstructive hydrocephalusC0009451
- communicating hydrocephalusC0009451
- Secondary normal pressure hydrocephalusC1955759
Clinical Terms
- Acquired communicating hydrocephalus
- Hydrocephalus ex vacuo
- Disorder of brain due to and following radiotherapy
- Post-hemorrhagic hydrocephalus
- Hydrocephalus, Communicating
- Non-obstructive hydrocephalus
- Non-obstructive hydrocephalus following traumatic injury
- IRPH -Intermittently raised pressure hydrocephalus
- Infantile posthaemorrhagic hydrocephalus
- Acquired hydrocephalus of newborn
- Hydrocephalus ex vacuo due to aging
- Secondary normal pressure hydrocephalus
- Progressive post hemorrhagic ventricular dilatation
- Communicating hydrocephalus (disorder)
- Hydrocephalus following traumatic injury
- Infantile posthemorrhagic hydrocephalus
- Hydrocephalus ex vacuo due to and following radiation therapy
- Congenital anomaly of the meninges
- Posthemorrhagic hydrocephalus
- Hydrocephalus ex vacuo due to injury of brain
- Disorder of brain due to and following radiation therapy
- Posthaemorrhagic hydrocephalus
- Posttraumatic hydrocephalus
- Progressive posthemorrhagic ventricular dilatation
- Progressive posthaemorrhagic ventricular dilatation
- Communicating hydrocephalus co-occurrent and due to congenital agenesis of arachnoid villi
- Postoperative communicating hydrocephalus
- Intermittently raised pressure hydrocephalus
- Post-traumatic communicating hydrocephalus
- Posttraumatic communicating hydrocephalus
- Communicating hydrocephalus following traumatic injury
- Ex-vacuo hydrocephalus due to infection
- Hydrocephaly communicative
- Progressive post haemorrhagic ventricular dilatation
- Hydrocephalus due to cerebrospinal fluid overproduction
- Congenital malformation of the meninges
- Hydrocephalus due to cerebrospinal fluid absorption defect
- Post-haemorrhagic hydrocephalus
- Hydrocephalus ex vacuo due to ageing
- Post-traumatic hydrocephalus
- Ex-vacuo hydrocephalus due to and following radiation therapy
Frequently Asked Questions
What is the ICD-10 code for communicating hydrocephalus?
The ICD-10-CM code for communicating hydrocephalus is G91.0. The full clinical description is "Communicating hydrocephalus". G91.0 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G91.0 mean?
ICD-10-CM code G91.0 represents “Communicating hydrocephalus”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G91.0 a billable code?
Yes, G91.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G91.0 in?
G91.0 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G91.0?
G91.0 has Excludes1 notes indicating codes that cannot be used together with it, including: Arnold-Chiari syndrome with hydrocephalus (Q07.-); congenital hydrocephalus (Q03.-); spina bifida with hydrocephalus (Q05.-).
What SNOMED CT codes does G91.0 map to?
G91.0 maps to 20 SNOMED CT concepts: 192805000, 782432008, 271569006, 722992006, 410014007, and 15 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G91.0?
G91.0 is linked to 2 UMLS Concept Unique Identifiers: C0009451, C1955759. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G91.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like communicating hydrocephalus affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G91.0?
G91.0 maps to the ICD-11 code: 8D64.0Z (Communicating hydrocephalus, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.